1. Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands;
2. Department of Hematology, University Medical Center Utrecht, Utrecht, The Netherlands;
3. Department of Internal Medicine, Bronovo Hospital, The Hague, The Netherlands;
4. Netherlands Association of Medical Specialists, Utrecht, The Netherlands;
5. Department of Pediatrics, Catharina Hospital, Eindhoven, The Netherlands;
6. Department of Pediatric Hemato-Oncology, Radboud University Medical Center, Nijmegen, The Netherlands; and
7. Department of Medical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands